Lina has a few snarky quips she could respond to that with, but she's generally wised up about making those kinds of cracks in Celestia's presence because it usually results in unpleasant consequences. Somehow enduring just one more of Celestia's friendship collage assignments seems like a far more daunting prospect than facing an A-list villain with one hand tied behind her back. So instead Lina just gives Grimlock's snout one more pat before she straightens up.

"You forgot sorcery genius," Lina says, unable to resist being at least a little bit obnoxious. Look, she has a quota to meet, okay. She glances at Celestia, dropping her voice into a loud whisper. "You really think taking him out to a park is a good idea, though? I mean, he's..." not very well trained yet is what she mouths at Celestia to finish the sentence, since she's pretty sure Grimlock's too stupid to read lips. Look, Lina might not have the best sense of responsibility when it comes to collateral damage, but she is still a superhero.